Definition: someone who runs, especially in competitions Level: A2
我哥哥是一名优秀的跑步运动员。
My brother is a very good ___runner.
看！那个跑步的人跑得真快。
Look! That ___runner is so fast.
她每天跑步，想成为一名更好的跑步者。
She runs every day to become a better ___runner.
